Parameters

The ReRegisterForFinalize method adds the obj parameter to the list of objects that request finalization before the garbage collector frees the object. The obj parameter must be the caller of this method.

Calling the ReRegisterForFinalize method does not guarantee that the garbage collector will call an object's finalizer.

By default, all objects that implement finalizers are added to the list of objects that require finalization; however, an object might have already been finalized or might have disabled finalization by calling the SuppressFinalize method.

A finalizer can use this method to resurrect itself or an object that it references.

Imports System
Namespace ReRegisterForFinalizeExample
Class MyMainClass
SharedSub Main()
'Create a MyFinalizeObject.Dim mfo AsNew MyFinalizeObject()
'Release the reference to mfo.
mfo = Nothing'Force a garbage collection.
GC.Collect()
'At this point mfo will have gone through the first Finalize.'There should now be a reference to mfo in the static'MyFinalizeObject.currentInstance field. Setting this value'to null and forcing another garbage collection will now'cause the object to Finalize permanently.
MyFinalizeObject.currentInstance = Nothing
GC.Collect()
EndSubEndClassClass MyFinalizeObject
PublicShared currentInstance As MyFinalizeObject = NothingPrivate hasFinalized AsBoolean = FalseProtectedOverridesSub Finalize()
If hasFinalized = FalseThen
Console.WriteLine("First finalization")
'Put this object back into a root by creating'a reference to it.
MyFinalizeObject.currentInstance = Me'Indicate that this instance has finalized once.
hasFinalized = True'Place a reference to this object back in the'finalization queue.
GC.ReRegisterForFinalize(Me)
Else
Console.WriteLine("Second finalization")
EndIfMyBase.Finalize()
EndSubEndClassEndNamespace